Furnace-door mounting



June 7, 1927.

D. S. TEWKSBURY ET AL FURNACE DOOR MOUNTING Filed June 5, 1924 Patented June 7, 1927.

y UNITEDSTATE'S PATENT',OFI-fica.

FUItNAcE-Dooa MOUNTING.

Application filedl .Tune 5, 1924.` Serial No. 718,049.

Our Vinvention relates to fuel doors for furnaces, and more particularly to doors of this character that are slidably mounted.

The invention has for one of itsl objects the provision of novel means for mounting a door of the character stated that `will permit the door to be easily and quickly raised intov opened position and that will when the .door is released and during its downward movement into closed position move it into airtight contact with its casing.

AV further object of the invention isthe provision of novel and simple means through the medium lof which the door may be readily raised into opened position and which will when released permit the door to rapidly gravitate into closed position.

lVith the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawing, wherein:

Figure 1 is a view in front elevation of a furnace illustrating the application of the door mounting and operating means,

Figure 2 is a sectional view taken on they horizontal plane indicatedl by the line 2--2 of Figure 1, and

Figure 3 is a detail sectional view taken on the vertical plane indicated by the line 3 3 of Figure 1.

Referring to the drawing by referencel numerals, 1 designates the fuel door, 2 the fuel door casing, 3 the ash pit door, and 4 the body of a furnace which may be of any well known construction.

1n accordance withV our invention, the door 1 is slidably mounted upon the casing 2 through the medium of vertical flanges 5 at the lateral sides of the casing and vertical channel bars 6 at the lateral edges of the door. The opposing lsides 7 and 8 of the flanges 5 and bars 6, respectively, are downwardly and inwardly inclined to cause the door 1 to move inwardly during its downward or closing movement, wherebyv to establish an air tight connection between the door and the casing 2 when the former is in fully Y closed position. The downward or closing movement of the door 1, is limited by pins 9 which are positioned for contact by the lower edge of the door when the latter is in its fully closed position. While the downwardly and inwardly inclined opposing sid-es 7 and 8 of the flanges 5 and bars 6, respectively,.establish .an air tight connection between the doorv 1 and the casing 2 when the former is in `fully closed position, they will not noticeably interfere with the elevation of the door into opened position inasmuch as the initial upward movement of the door results ina loose connection being established between the flanges 5 and-bars 6.

A lever 10 vwhich is mounted upon a pivot 11 for movement in a plane parallel with the front side of the door 1, provides means by whichthe door maybe raised into opened position.- The pivot 11lis` carried byV a- Y bracket 12 which is secured to the furnace at one side of the door 1 and at a point between the upper and lower edges of the door. The lever 10 extends inwardly and outwardly beyond the pivot 11. The inner portion of the lever 10 curves downwardly and is provided at its lower end with an angular extension 13 which is of` arcuate formation in cross sectionV and the upper convex edge of which contacts with a wear piece 14 secured tothe lower edge of the door 1. 1f desired, this part 14 may be made separately and secured-to the door, or the lower edge of the door may be enlarged to provide the same. The outer portion of the lever 1() inclines upwardly and is provided with a plurality of openings 15 through one of which passes the angulaiupper end 16 of a vertically disposed rod 17. A nut 16a is mounted upon the angular end 16 of the rod 17 to prevent the rod from becoming accidentally disconnected from the.

lever 10. The lower end of theprod 17 is pivotally connected as at 18 to a pedal lever 19 which in turn is pivoted as at 20 to a bracket 21 secured to the furnace. As the lever 1() is provided with more than one of the openings 15, the rod 17 may be connected to the lever at the desired or required distance from the pivot 11.

A downward pressure applied to the pedal lever 19 will rock the lever 10 upon its pivot 11 in a direction to swing its inner end upwardly, and this movement of the lever 10 will raise the door 1 into opened position, as indicated in dotted lines in Figure 1. When the lever 19 is released, the oor 1 will gravitate into closed position, and this movement of the door will return the lever 10 to its normally depressed position and the lever will return thel lever 19 to its normally raised position. As the angular end 13 of the lever l0 has a sliding contact `with the Wear lplate .14 on thelowere'dge of the door l, there will be no binding action between vthese parts during the raising and lowering of the door, with 'the result that the door may be easily and quickly `opened and will rapidly return to closed position when released.

From the foregoing description, taken in connection with theV accompanying drawing, it should be apparentthat wehave provided simple and efficient means for establishing an air tight connection between the .furnace door and its casing when the former is `in k fully'closed position,and that we have provided simple and efficient means through the medium of which the 'door may be easily and quickly opened by one foot leavingboth hands free to feed coal 'to the furnace.

It should -be understood that'the drawing is merelyillustrative and doesnot .pretend to give exact proportions. Furthermore, the

sai-d drawing is illustrative of a preferred construction,,it-,being t,my expectation that various Achanges and modifications may be made without departing from the spirit and scope of the invention.'

1Whatisc'laim'ed ist- `dll/leans for slidably mounting a furnace door onits easing for upward movement kto vuncover the openingin the casing and downward movement to cover the opening, comprising vertical flanges on the casing, vverti cal channel bars on the 4door and embracing the flanges, the inner. opposingsides of the flanges and channel bars being. downwardly and inwardly inclined to carry the ldoor bodily in the direction of the casing,v during its ydownward movement, andy stops carried.

by the` casing below the Aopening` therein and upon which the door rests whenin position to fully close the opening.

In testimony whereof we affix our natures. f.

DANA 1 S: V'IEVKSBURY.l ALBERTE. NEWTON.

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